the connection of the root as well as its ESA and MSA cognates (Sab. mdlt, SD 36, Soq. déle, LS 128) to PS *dlw is questionable
Thought to be borrowed from Cushitic by A. Dolgopolsky (1973:51) and D. Appleyard (1977:36). A. Militarev (2004:299‒300, 2010:58) prefers to treat the EthS and Cushitic terms as cognates.
Cf. PArm. *npḳ ‘to go out’.
The origin of Proto-EthS *fṭn ‘to be fast’ is uncertain, but Leslau may be right to connect it with Arb. fṭn ‘to be intelligent, sagacious’ (Lane 2418).
The origin of Proto-EthS *gʷdl ‘to be missing’ is unknown.